.lt-main {
  display: flex;
}
.lt-main .lt-cate-aside {
  width: 90px;
  height: 100%;
  position: relative;
}
.lt-main .lt-cate-aside ul {
  padding: 0;
}
.lt-main .lt-cate-aside ul li a {
  display: block;
  width: 90px;
  height: 50px;
  text-align: center;
  line-height: 50px;
  color: #333;
  border-right: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
  background-color: #eee;
}
.lt-main .lt-cate-aside ul li.current a {
  border-right: none;
  background-color: #fff;
}
.lt-main .lt-cate-content {
  width: 100%;
  flex: 1;
}
.lt-main .lt-cate-content a {
  float: left;
  width: 33.33%;
  text-align: center;
}
.lt-main .lt-cate-content a img {
  width: 70%;
}
